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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 1, Iss. 3 — Jul. 1, 2011
  • pp: 379–390

Exciton states of CdTe tetrapod-shaped nanocrystals

Kazuaki Sakoda, Yuanzhao Yao, Takashi Kuroda, Dmitry N. Dirin, and Roman B. Vasiliev  »View Author Affiliations


Optical Materials Express, Vol. 1, Issue 3, pp. 379-390 (2011)
http://dx.doi.org/10.1364/OME.1.000379


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Abstract

Excitons of CdTe tetrapod-shaped nanocrystals are theoretically analyzed. Individual electron and hole states are calculated by solving one-particle Schrödinger equation by the finite element method with the single-band effective-mass approximation and exciton states are obtained by numerical diagonalization of the configuration interaction Hamiltonian. Spatial symmetries of the exciton states are related to those of the one-particle states by group theory and verified by numerical calculation. It is shown that the lowest exciton state is an optically active A1 exciton. Optical absorption spectra are calculated and compared with available experimental data.

© 2011 OSA

OCIS Codes
(160.6000) Materials : Semiconductor materials
(160.4236) Materials : Nanomaterials

ToC Category:
Semiconductors

History
Original Manuscript: April 26, 2011
Revised Manuscript: May 20, 2011
Manuscript Accepted: May 30, 2011
Published: June 10, 2011

Citation
Kazuaki Sakoda, Yuanzhao Yao, Takashi Kuroda, Dmitry N. Dirin, and Roman B. Vasiliev, "Exciton states of CdTe tetrapod-shaped nanocrystals," Opt. Mater. Express 1, 379-390 (2011)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-1-3-379


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